Technic Steam Locomotive PF/PU/Pneumatic

[XG BC]

depending on the amount of power you need you could also try a fischertechnik compressor which is small but fairly powerful

[Berthil]

Thanks for leaving a comment on Rebrickable on using (part of) my compressor design, very nice project, good luck with it!

Edited April 4, 2022 by Berthil

[Technic Train Man]

I've made a bunch of improvements so now it's working pretty well and you can barely see any air tube!

As you can see in the video below, the cylinders are attached by the air inlets but it's not a solid connection. I probably need to move the inlets up/down, but not sideways like now. And I will improve the construction around the cylinders so there is less flex.

In a couple weeks I hope to receive some more air pumps so it can go faster. And another thing to look forward to are the 3D printed train wheels someone has offered to make!

For now, look at this beauty!

 

 

[Mr Jos]

Really cool model! It has a nice speed already.

And these pneumatic cylinders are always hard to mount somewhere indeed.

[Technic Train Man]

I rotated the cylinders so the inlets are up again. At first I connected the cylinders with some axles with stops but the little space, that allows for the axle to spin, made the cylinders move a little bit and I could not do anything about that, except for using pins. So that's what I did haha. But there is a half stud space between the cylinder and beam so the 3L pin is completely in the beam but 1.5 stud into the cylinder. And still that is a lot better than connect it with an axle.

Big change to the compressor because I am using 2 XL motors instead of 4 and the whole compressor is half in size! Nice!

I've ordered another 12 air pumps so will build another compressor. And then it will be a crazy ratio of 12 air pumps per medium cylinder! It's going to take a couple weeks before the 12 air pumps arrive, so stay tuned!

 

Update 5:

 

 

 

 

 

Edited April 19, 2022 by Technic Train Man